ovme 发表于 2020-1-30 14:46:03

ISO 15721:2001

ISO 15721:2001
Metallic coatings — Porosity tests — Porosity in gold or palladium coatings by sulfurous acid/sulfur dioxide vapour

shukesan 发表于 2020-1-30 14:46:04

ISO 15720,15721 -2001 Metallic coatings — Porosity tests
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